JPH07301020A - Device for locking parking car - Google Patents

Abstract

PURPOSE:To securely keep a wheel stopper to be in the erected state even when a large impulsive load acts thereon without using of an expensive electromagnetic brake or a large cylinder, in a locking device of a parking car preventing it from moving out. CONSTITUTION:A slide shaft 38 arranged to make it possible to transfer a car back and forth and a feed screw shaft 40 rotating to both forward and reverse directions are arranged parallelly to the breadthwise direction. A driving link member 64 is connected to straddle the nut 60 inserted in the feed screw shaft 40 and the fixing block 58 arranged at the slide shaft 38 so as not to be transferable in the axial direction and an erected link 82 is connected to straddle the wheel stopper 20 provided with a roller 76 at the front end and fixed to the slide shaft 38 and the main body member 22. The slide shaft 38 is moved reciprocally by the rotation of the feed screw shaft 40 and hence, the wheel stopper 20 can be changed to an erected posture or a fallen posture.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a parking lock device which is installed in a parking facility and prevents an unlawful exit of a parked vehicle.

[0002]

2. Description of the Related Art A parking lock device for automatically advancing and retreating a wheel stopper member in conjunction with a vehicle detection device, a charge adjustment device, etc. for the purpose of unmanned management of entrance and exit of a parked vehicle in a parking facility. It has been known. JP-A-60
The device described in Japanese Patent Laid-Open No. 19875 (Conventional Example 1) is one example thereof, and a gear train is rotationally driven by an electric motor to rotate a rotary shaft to which a wheel stopper member is fixed, thereby rotating the wheel. The stop member is switched between the fallen state and the upright state, and when it is in the upright state, the rotation position of one gear is fixed by the electromagnetic brake to prevent the wheel stop member from falling down and prevent the vehicle from leaving. It has become. Further, in Japanese Utility Model Laid-Open No. 63-201159 (Prior Art 2), a wheel stopper member rotatably arranged around one rotation axis is rotated by a cylinder, and a fall state and an upright state are described. A parking lock device has been proposed in which a roller is rotatably attached to the tip of a wheel stopper member while being positioned at a position.

[0003]

However, in the parking lock device described in the prior art example 1, the wheels may climb up and escape with the tip of the wheel stopper member as a fulcrum. In particular, when the wheel has a large diameter and is a driving wheel, it can be relatively easily overcome. Further, if a large impact load is applied when the wheel rides on the wheel stopper member, the wheel stopper member may fall over or the electromagnetic brake may be damaged due to exceeding the braking torque of the electromagnetic brake. Therefore, it is necessary to employ a large and expensive electromagnetic brake that generates a large braking torque.

On the other hand, according to the parking lock device described in the conventional example 2, even if the driving wheel is driven while engaging with the roller attached to the tip of the wheel stopper, the roller is rotated together. As a result, the drive wheel is prevented from idling and riding on the tip of the wheel stopper member as a fulcrum is prevented. However, since the wheel stopper member is rotated by the cylinder, a pump, a fluid circuit, a switching valve, etc. for supplying the pressure fluid to the cylinder are required, which makes the device large-scale, while the wheel stopper member is large. Is positioned upright by the cylinder.Therefore, in order to prevent the wheel stop member from falling down even if a large impact load is applied when the wheels are engaged, a large diameter cylinder with a large pressure receiving area and a switch that withstands high pressure can be used. It is necessary to use valves.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to prevent the use of an expensive electromagnetic brake or a large-diameter cylinder and to provide a wheel stopper member even when a large impact load is applied. It is an object of the present invention to provide a parking lock device in which the vehicle can be reliably maintained in the standing state and the wheels cannot easily get over the wheel stopper member.

[0006]

To achieve the above object, a first invention is a parking lock device for preventing a vehicle entering a parking space from exiting the parking space. ) A main body member fixed to a floor member of the parking space; and (b) the main body rotatably around a first axis that is substantially perpendicular to the entering and leaving directions of the vehicle and is substantially parallel to the floor member. A wheel stopper member disposed on the member and having a roller rotatably attached to the tip end portion thereof about an axis substantially parallel to the first axis, and (c) a second wheel parallel to the first axis. An upright link member that is disposed on the main body member so as to be rotatable about an axis and is coupled to the wheel stopper member such that a tip end portion is rotatable about an axis parallel to the second axis thereof. (D) The wheel stopper provided on the body member in a fixed position. A fixed support member for rotatably supporting and one of the base end portion of the upright link member,
(E) The main body member is provided so as to be movable in a straight line direction substantially parallel to the entry and exit directions of the vehicle, and rotatably supports the other base end portions of the wheel stopper member and the standing link member. , The fixed support member is moved toward and away from the fixed support member so that the wheel stopper member is in a collapsed state substantially parallel to the floor member, and the tip end of the roller is engaged with the wheel when the vehicle exits. A movable supporting member for changing the posture thereof to a standing state in which a portion extends obliquely upward toward the wheel side; and (f) disposed on the main body member substantially at right angles to the straight line direction and substantially parallel to the floor member. A feed screw that is rotationally driven in both forward and reverse directions by a rotation drive means, and (g) a shaft that is substantially perpendicular to the floor member across the nut member screwed to the feed screw and the movable support member. Pivot around the center The nut member is reciprocally moved in accordance with the rotation of the feed screw, so that the movable support member is reciprocally moved in the straight line direction to move toward and away from the fixed support member. It is characterized by having.

[0007]

In the above parking lock device, when the feed screw is rotationally driven in both forward and reverse directions by the rotary drive means to move the nut member,
The movable support member is reciprocally moved in a straight line direction by the drive link member arranged so as to straddle the nut member and the movable support member, and is moved toward and away from the fixed support member. One and the other base ends of the wheel stopper member and the standing link member are rotatably connected to the fixed support member and the movable support member, and the tip end portion of the standing link member serves as the wheel stopper member. Since they are rotatably connected, the wheel stopper member and the standing link member are respectively connected to the base end side connecting portion, that is, the first axis and the second axis, by the supporting members approaching and separating from each other. It can be rotated around the heart. As a result, the wheel stopper member has its posture changed between a lying state substantially parallel to the floor member and a standing state in which the tip portion extends obliquely upward so that the tip end engages with the wheel when the parked vehicle exits, and the lying state. The vehicle is allowed to pass through, while the standing state prevents the vehicle from leaving due to the engagement of the wheel stopper member and the wheel. In this case, since the roller is rotatably attached to the tip end portion of the wheel stopper member, when the wheel is a driving wheel, the engaged roller causes the wheel to idle, causing the wheel to idle. It is difficult to get over the vehicle with the fulcrum as a fulcrum, and the exit of the vehicle is prevented.

Here, in the present invention, the nut member is reciprocally moved in accordance with the rotation of the feed screw, so that the movable support member is moved in a straight line direction via the drive link member, and the wheel stopper member is moved to the first position. Since it can be rotated about the axis, a large impact load is applied in the standing state of the wheel stopper member, and even if the load is transmitted from the movable support member to the nut member via the drive link member. , The force acting to rotate the feed screw is small.
That is, since the wheel stopper member is mechanically locked in the standing state, it is not always necessary to provide the braking means for preventing the rotation of the feed screw in order to maintain the standing state, and even if the braking means is provided, it is small and inexpensive. It is only necessary to adopt any of the above, and the device is simple and inexpensive.

Further, since the wheel stopper member is substantially mechanically locked in this way, the rotation amount of the feed screw is arbitrarily set to set the wheel stopper member in the standing posture, that is, the angle with the floor member in the standing state. The roller can be appropriately changed, and the roller can be positioned at a height position suitable for preventing the vehicle from escaping in accordance with the size of the wheels.

Further, in the present invention, since the moving direction of the movable supporting member and the disposing direction of the feed screw are substantially parallel to the floor member, the apparatus is relatively flat and can be compactly arranged on the floor member. There are advantages.

[0011]

A second aspect of the present invention is the parking lock device according to the first aspect, wherein the main body member is
A vertical cross-sectional shape that is substantially parallel to the straight line direction forms a substantially trapezoidal container shape, and has a trapezoidal portion that can be stepped on a wheel by being fixedly mounted on the upper surface of the floor member, and within the trapezoidal portion, The base end portion of the standing link member is supported by the fixed support member, and the base end portion of the wheel stopper member is supported by the movable support member, and the distal end of the wheel stopper member is moved as the movable support member moves. When the vehicle moves out toward the one end side where the wheel rides when the vehicle exits, the portion protrudes upward from the trapezoidal portion, so that the wheel stopper member is in the upright state. To do.

[0012]

In the above parking lock device, the main components are housed in the trapezoidal portion of the main body member, and the trapezoidal portion is fixed to the upper surface of the floor member. Therefore, the parking lock device can be carried while each component is assembled to the main body member, and the floor lock member can be easily attached without any special processing.

Further, in the trapezoidal portion, the base end portion of the standing link member is supported by the fixed support member, and the base end portion of the wheel stopper member is supported by the movable support member so that the movable support member can move. Along with this, the tip end of the wheel stopper member is projected upward from the trapezoidal portion while moving toward the one end side where the wheel rides when the vehicle exits, so that the wheel stopper member is in the upright state. Because,
The wheel stop member is engaged with the wheel before it completely rides on the trapezoid. That is, when the wheel stopper member housed in the trapezoidal portion is erected in the fallen state, the tip portion thereof is projected upward while moving toward the one end side where the wheel rides when the vehicle exits, It is possible to engage the wheel with the roller at the tip protruding to one end side of the trapezoidal portion, and it is possible to place it at a higher position of the wheel as compared with the case where the wheel is engaged while riding on the trapezoidal portion. It is possible to effectively prevent the vehicle from leaving by engaging the rollers. If the length of the wheel stopper is increased, the roller can be engaged with the high position of the wheel even when riding on the trapezoidal portion (however, it does not exceed the minimum ground clearance of the vehicle body), As the size of the device increases, the required strength of each part increases correspondingly, which is not preferable.

[0014]

A third aspect of the present invention is the parking lock device according to the first or second aspect of the present invention, wherein the drive link member is aligned with the straight line direction when the wheel stopper member is in the upright state. It is characterized in that the upright link member is in a substantially parallel posture, and the upright link member is in a posture in a substantially vertical direction.

[0015]

In the above parking lock device, the drive link member is in a posture substantially parallel to the straight line direction, that is, substantially parallel to the moving direction of the movable support member in the standing state of the wheel stopper member. The structurally high strength can be obtained against the load transmitted from the wheel stopper member to the movable support member, and the load applied to the drive link member and the connecting portion thereof can be reduced. Further, since the force acts on the nut member in a direction substantially perpendicular to the feed screw, the force acting in the direction of rotating the feed screw is further reduced, and due to friction between the nut member and the feed screw, etc. It is possible to maintain the wheel stopper member in the upright state without providing the braking means for preventing the rotation of the wheel stopper member. The standing link member also has a substantially vertical posture in the standing state of the wheel stopper member, and therefore, when an impact load is applied to the wheel stopper member,
The posture of the standing link member is substantially parallel to the direction of the force that pushes the wheel stopper member downward, so that structurally high strength is obtained and the load on the standing link member and its connecting portion is reduced. As described above, according to the present invention, since structurally high strength is obtained, it is possible to more easily and inexpensively configure the parking lock device that can reliably maintain the wheel stopper member in the standing state regardless of the impact load. Become.

When the upright link member is supported by the movable support member, the upright link member and the drive link member are substantially perpendicular to each other in the upright state of the wheel stopper member, so that the load is applied to the wheel stopper member. The load applied to the drive link member and the feed screw when added is extremely small.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 2 is a plan view of the parking lock device 10 according to one embodiment of the present invention.
Is arranged at a position A or a position B indicated by diagonal lines with respect to the position of the wheel 16 of the vehicle 14 entering and parking in the direction of the rightward arrow in the drawing in the parking space 12 shown in the schematic plan view of FIG. 3, for example. To be done. The vehicle 14 that has entered the vehicle stop block 18 at the right end of FIG. 3 until the wheels 16 come into contact with it will always get over the parking lock device 10. Then, even if the vehicle 14 improperly tries to exit in the direction of the leftward arrow in the figure, for example, if the parking fee is not paid, the vehicle 14
When the vehicle has gone over the parking lock device 10 and parked, the wheel stopper member 20 is set up in advance as shown in FIG. 4 to engage with the wheels 16 and prevent the vehicle 14 from leaving. That is, when the vehicle detection device (not shown) detects that the vehicle 14 has entered the parking space 12, the wheel stopper member 20 is set in the upright state as shown in FIG. When the parking fee is settled by the fee settling device, the wheel stopper member 20 falls down to the right in FIG. 4 to allow the vehicle 14 to exit. It should be noted that the parking lock device 10 is disposed at both the above positions A and B, or two left and right, or a total of four front and rear and left and right.
It is also possible to arrange the parking lock device 10 so as to engage with one wheel 16.

The parking lock device 10 is indicated by I- in FIG.
As is clear from FIGS. 1 and 5 showing the I cross section and the VV cross section, a case 21 having a trapezoidal container shape with a short vertical cross section disposed in a portion through which the wheels 16 of the vehicle 14 pass is provided. There is. The case 21 includes a flat base plate 24, a first cover panel 26, a second cover panel 28, and the like that incline at a predetermined angle in the entry and exit directions of the vehicle 14, respectively.
The base plate 24 is fixedly mounted on the second plate 2 via a large number of anchor bolts 34 in a state of being in close contact with the base plate 24.
Base plate 24 and first cover panel 26 and second
Between the cover panel 28 and each cover panel,
A number of up and down ribs are provided integrally with the base plate 24 or each cover panel at appropriate points to support the load of 4. The case 21 corresponds to a trapezoidal portion, and a motor unit 30 is integrally attached to the lower side in FIG. 2, that is, a portion separated laterally from the passage position of the wheels 16.
The housing 22 and the case 21 form a main body member 22. The parking lock device 10 includes a main body member 22.
Is integrally assembled to the parking space 12 and is disposed at a predetermined position in the parking space 12. With respect to the disposition posture with respect to the parking space 12, when the vehicle 14 enters the parking space 12, the wheels 16 are arranged as shown in FIG. 2 and 5 are set to move from the left side to the right side, in other words, the wheels 16 engaged when preventing the vehicle 14 from exiting are set so as to be located on the right side of those figures, and Corresponds to one end side of the trapezoidal portion.

An inner frame 36, which is bent by press working so that the vertical cross section has a hat shape as shown in FIG. 5, is fixedly installed in the substantially central portion of the base plate 24, and inside the inner frame 36. , Vehicle 1
4 in a direction substantially parallel to the entry / exit direction (hereinafter, simply referred to as forward / backward direction) and parallel to the base plate 24 (floor member 32), that is, the slide shaft 38 and the vertical direction in FIG. 2 (hereinafter simply referred to as vehicle width direction). The feed screw shafts 40 are provided respectively. The slide shaft 38 has a long round bar shape, and a pair of slide guides 42 fixed to the base plate 24 as shown in FIG. That is, both end portions are supported in a state of being guided so as to be linearly movable in the left and right directions in FIGS. 2 and 5. As is apparent from FIG. 1, the slide guide 42 is formed by vertically stacking and fixing a pair of plate members 44 and 46 having a hat-shaped cross-sectional shape having different height dimensions from each other.
The slide shaft 38 is simply inserted into the long hole space formed with a predetermined stroke between the holes 46. On the other hand, the feed screw shaft 40 is supported by a pair of bearing units 48, 48 at both end portions thereof and by a bearing 50 at the center portion thereof so as to be rotatable about their respective axial centers. It is provided with a pair of screw portions 40a, 40b, which are arranged and have trapezoidal threads with opposite screw directions and equal leads. The feed screw shaft 40 corresponds to the motor unit 3
It is driven to rotate in both forward and reverse directions by the driving force transmitted from the electric motor 52 and the speed reducer 54, which are provided for the vehicle 0, through the timing belt 56. The feed screw shaft 40 corresponds to a feed screw, and the motor unit 30 corresponds to a rotation driving means.

A pair of locking blocks 58, 58 are attached to the slide shaft 38 such that they cannot move relative to each other in the axial direction and can rotate relative to each other about the axial center. Screw parts 40a, 40b
Nut members 60 and 62 are respectively screwed together, and the drive link members 64 are connected to the upper side and the lower side in FIG. 5 across the locking block 58 and the nut members 60 and 62, respectively. There is. Both ends of the drive link member 64 are pins 66, which are vertically inserted through the locking block 58 and the nut members 60, 62, respectively.
By 66, it is locked so as to be rotatable about an axis substantially perpendicular to the base plate 24. FIG. 6 shows each cover panel 26, 28 and inner frame 3 in FIG.
6 is a plan view showing a main part with 6 removed and a part cut away. FIG.

When the feed screw shaft 40 is driven to rotate,
The pair of nut members 60 and 62 are moved toward and away from each other along the feed screw shaft 40, and the drive link member 64 changes its posture accordingly, and the locking block 58 is pulled or pushed to move the slide shaft 38. Move it back and forth. Since the slide shaft 38 and the feed screw shaft 40 are parallel to each other, and the nut members 60 and 62 and the drive link member 64 operate symmetrically in synchronization with each other, the slide shaft 38 is translated in the advancing / retreating direction. As a result, the slide shaft 3
As shown in FIGS. 7 and 8, 8 is a first position in which the drive link member 64 is separated from the feed screw shaft 40 to the right as shown in FIGS. And is reciprocated between a second position approaching the feed screw shaft 40. The first position and the second position may be, for example, the moving end of the slide shaft 38 defined by the slide guide 42, or the slide shaft 38.
Can be arbitrarily determined within the movement stroke of The slide shaft 38 corresponds to a movable support member.

The wheel stopper member 20 includes three link-shaped arm portions 68, 68, 70 each having one end fixed to both ends and the center of the slide shaft 38, and the respective arm portions 68, 68, 70. The frame is composed of a bar-shaped connecting member 72 that connects the two in the vehicle width direction, and slides are provided at the other ends of the arm portions 68, 68 located at both ends, that is, at the tip end portions separated from the slide shaft 38. A roller 76 is attached so as to be rotatable around a support shaft 74 that is substantially parallel to the shaft 38. The wheel stopper member 20 is configured so as to be integrally rotated with the slide shaft 38 fixed to the base end thereof about the axis of the slide shaft 38, and the axis of the slide shaft 38 has a first axis. It corresponds to the axis. The roller 76 is
It has a cylindrical shape with a constant diameter, and has various axial dimensions when arranged in the parking space 12.
It is set so that the wheel 16 can always be engaged regardless of the individual tread width when the vehicle 4 is parked and the positional deviation of the vehicle 14 in the vehicle width direction within the parking space 12.

Further, the pair of arm portions 6 of the wheel stopper member 20.
8 and the case 21, a pair of standing link members 82
Is provided. The base end of the upright link member 82 is fixed to the bracket 84 fixed on the base plate 24 on the right side of the moving range of the slide shaft 38, that is, on the side closer to the wheel 16 of the vehicle 14 which should be prevented from exiting.
Is rotatably supported about a shaft center parallel to the slide shaft 38 via a pin 86, while the tip end is located at an intermediate position of the arm 68 via a pin 88 about a shaft center parallel to the slide shaft 38. Is rotatably connected. For this reason, the posture of the wheel stopper member 20 is regulated by the standing link member 82 according to the position of the slide shaft 38, and the posture is changed as the slide shaft 38 moves. Specifically, when the slide shaft 38 is moved from the first position to the second position, the wheel stopper member 20 is moved leftward together with the slide shaft 38 and is rotated clockwise around the slide shaft 38. The standing link member 82 is rotated counterclockwise of the pin 86. Then, when the slide shaft 38 reaches the second position, the wheel stopper member 20 is in a lying state substantially parallel to the base plate 24 as shown in FIG. 7, and the roller 76 is placed on the base plate 24. In this state, the wheel stopper member 20 is housed in the case 21, the upper portion thereof is closed by the third cover plate 80, and the wheel 16 is allowed to pass therethrough. The third cover plate 80 corresponds to the inner frame 3
6 is rotatably attached about the shaft center in the vehicle width direction via a hinge 78, and its tip end is brought into contact with the roller 76 by its own weight so as to be rotated together with the wheel stopper member 20. ing. In the collapsed state of the wheel stopper member 20, the upright link member 82 is also the base plate 2.
Although it is laid down substantially parallel to 4, the pin 88 is in an inclined state in which it is located slightly above the pin 86. FIG. 8 is a plan view of a main portion in which the wheel stopper member 20 is in the laid state as described above.

On the contrary, when the slide shaft 38 is moved from the second position to the first position, the wheel stopper member 20 is moved rightward together with the slide shaft 38 and is rotated counterclockwise of the slide shaft 38. ,
The standing link member 82 is rotated clockwise around the pin 86. Then, when the slide shaft 38 reaches the first position, the wheel stopper member 20 is in an upright state in which the wheel stopper member 20 extends obliquely upward toward the wheel 16 side of the vehicle 14, which is to be prevented from leaving, as shown in FIG. Thus, the wheel 16 of the vehicle 14 that is about to leave is engaged and the exit is blocked.
Further, as is apparent from FIG. 1, the standing link member 82 is in a vertical posture slightly inclined to the left side, forms a triangular truss with the wheel stopper member 20 and the base plate 24, and brings the wheel stopper member 20 to the standing state. Hold. The bracket 84 that rotatably attaches the standing link member 82 to the case 21 corresponds to a fixed support member, and the axis of the pin 86 corresponds to the second axis.

Next, the operation of the parking lock device 10 constructed as described above will be described. The wheel stopper member 20 as shown in FIG.
When the vehicle 14 is in the laid state, the vehicle 14 enters the parking space 12 and the wheels 16 pass over the case 21, and when the vehicle is parked as shown in FIG. 3, the vehicle detection device (not shown) automatically parks the vehicle 14. To detect. When parking is detected by the vehicle detection device, a drive signal is supplied from the control device (not shown) to the motor unit 30, the electric motor 52 is activated, and the feed screw shaft 40 is driven via the speed reducer 54 and the timing belt 56. The pair of nut members 6
0, 62 in the direction of approaching each other, for example, the screw portion 4
When 0a is a right-hand thread and the threaded portion 40b is a left-hand thread, it is driven to rotate counterclockwise in FIG. As a result, the slide shaft 38 is moved from the second position to the first position, and the wheel stopper member 20 is raised. Slide shaft 38
When the moving end detecting means such as a limit switch (not shown) detects that the wheel stopper member 20 has reached the first position and is in the upright state, the operation of the electric motor 52 is stopped. When the first position is the moving end of the slide shaft 38 defined by the slide guide 42,
The operation of the electric motor 52 may be stopped by detecting that the output of the electric motor 52 has reached the stall torque by a load cell or the like. Alternatively, the electric motor 52 may be rotated by a preset number of rotations and automatically stopped.

On the other hand, when the parking fee is settled by the fee settling device and the determination for unlocking is made, a drive signal is supplied from the control device to the motor unit 30 and the electric motor 5 is driven.
2, the feed screw shaft 40 is rotationally driven in the reverse direction. As a result, the nut members 60 and 62 are moved in a direction in which they are separated from each other, the slide shaft 38 is moved from the first position to the second position, and the wheel stopper member 20 is brought into a lying state. The slide shaft 38 is the second
When the moving end detecting means such as a limit switch (not shown) detects that the wheel stopper member 20 has reached the position and has fallen down, the operation of the electric motor 52 is stopped. When the second position is the moving end of the slide shaft 38 defined by the slide guide 42, the load cell or the like detects that the output of the electric motor 52 has reached the stall torque, and the operation of the electric motor 52 is stopped. You may do it. Alternatively, the electric motor 52 may be rotated by a preset number of rotations and automatically stopped.

If the parking fee is not settled by the fee adjusting device or the like, the wheel stopper member 20 is held in an upright state.
6 engages with the wheel stopper member 20 to prevent the vehicle 14 from leaving. In that case, the roller 7 is attached to the tip of the wheel stopper member 20.
6 is rotatably mounted, so that when the wheel 16 is a drive wheel, the wheel 16 is made to idle by rotating the engaged roller 76 together, and the wheel stopper member 20 is rotated.
It is difficult to get over the vehicle by using the tip of the vehicle as a fulcrum, and the vehicle 14 is prevented from leaving.

Further, the parking lock device 10 of the present embodiment is
As the nut members 60 and 62 are moved closer to each other as the feed screw shaft 40 rotates, the drive link member 64
Since the slide shaft 38 is moved in parallel from the second position to the first position via the, and the wheel stopper member 20 is in the upright state, a large impact load is applied by the wheel 16,
The load is applied from the slide shaft 38 to the drive link member 6
Even if the force is transmitted to the nut members 60 and 62 via 4, the force acting to rotate the feed screw shaft 40 is small. That is, the wheel stopper member 20 is mechanically locked in a standing state, and particularly in the present embodiment, the drive link member 64 is in a posture substantially parallel to the advancing / retracting direction in the standing state. The force acts in a direction substantially perpendicular to the feed screw shaft 40, and the force acting in the direction of rotating the feed screw shaft 40 is further reduced. As a result, the rotation of the feed screw shaft 40 is blocked by the friction between the feed screw shaft 40 and the nut members 60 and 62 and the slight friction between the feed screw shaft 40 and the bearing unit 48 and the bearing 50, and the worm is prevented. The speed reducer 54 including gears is not overloaded, and the wheel stopper member 20 is reliably held in the upright state, so that the device is simpler than the conventional device using an electromagnetic brake having a large braking torque. And it is cheaply constructed.

Since the wheel stopper member 20 is substantially mechanically locked in this way, the rotation amount of the feed screw shaft 40,
That is, it is possible to arbitrarily set the first position of the slide shaft 38 and appropriately change the standing posture of the wheel stopper member 20. For example, the minimum ground clearance of the vehicle 14 and the size of the wheels 16 are detected by an optical sensor or the like, and the wheel stopper member 20 is used.
It is also possible to control the rotation amount of the feed screw shaft 40 such that the standing angle of the roller, that is, the height of the roller 76 is a height position suitable for preventing the vehicle 14 from escaping.

When the wheel stopper member 20 is in the upright state, the drive link member 64 is in a posture substantially parallel to the forward / backward direction, that is, substantially parallel to the moving direction of the slide shaft 38.
Structurally high strength is obtained with respect to the load transmitted from the wheel stopper member 20 to the slide shaft 38, and the load applied to the drive link member 64 and the pin 66 of the connecting portion is reduced. The standing link member 82 is also the wheel stopper member 20.
Since the lower side has a substantially vertical posture, when the impact load is applied to the wheel stopper member 20, the posture of the standing link member 82 is substantially in the direction of the force that pushes the wheel stopper member 20 downward. Since they are parallel to each other, structurally high strength is obtained, and the load applied to the standing link member 82 and the pins 86 and 88 of the connecting portion is reduced. As a result, the parking lock device 10 that can reliably maintain the wheel stopper member 20 in the upright state regardless of the impact load is configured more easily and inexpensively.

Further, since the moving direction of the slide shaft 38 and the disposing direction of the feed screw shaft 40 are substantially parallel to the base plate 24, that is, substantially parallel to the floor member 32, the parking lock device 10 is constructed to be relatively flat, It can be compactly arranged on the floor member 32. In particular, the parking lock device 10 of this embodiment can be carried in the assembled state because the main components are housed in the case 21 of the main body member 22, and the main body member 22 is attached to the upper surface of the floor member 32 by the anchor bolts 34. Floor member 3 because it only needs to be attached
The mounting work can be performed easily and quickly without applying any special processing to 2.

Further, the parking lock device 10 of this embodiment is
In the laid-down state, the tip of the wheel stopper member 20 housed in the trapezoidal case 21 is provided with the wheel 16 when the vehicle exits.
To the side where one rides, that is, one end side to bring the wheel stopper member 20 to the upright state, the roller 76 at the tip portion is projected to one end side thereof, and as shown in FIG.
6 is engaged with its wheels 16 before riding on the case 21. Therefore, as compared with the case where the wheels 16 are engaged in the state of riding on the case 21, the rollers 76 are engaged at a higher position of the wheels 16 and the exit of the vehicle 14 can be effectively prevented. Particularly, in this embodiment, the standing link member 82
A bracket 84 that supports the roller is disposed at the one end side, and the roller 76 is positioned closer to the second cover panel 28 in order to raise the wheel stopper member 20 while moving it to the one end side as a whole. It is possible and more effective. Incidentally, if the length dimension of the wheel stopper member 20 is increased, the roller 76 can be engaged with the high position of the wheel 16 even when the wheel stopper member 20 is riding on the case 21 (however, the ground clearance of the vehicle 14 or lower). However, as the size of the device increases, the required strength of each part increases, which is not preferable.

Further, in this embodiment, since two sets of drive link members 64 are symmetrically arranged and their operation timings are synchronized, the guide means for holding the slide shaft 38 in a posture perpendicular to the forward / backward direction. Since it is not necessary to separately provide the device, the device is configured to be simple and lightweight, and because the structure is less likely to be twisted or rattled and power loss is small,
Excellent durability and economy can be obtained.

Although one embodiment of the present invention has been described in detail with reference to the drawings, the present invention can be implemented in other modes.

For example, in the above embodiment, the flat floor member 32 is used.
In the case where the parking lock device 10 is provided with the inclined first and second cover panels 26 and 28 so as to be arranged above, even if the parking lock device 10 is embedded in a previously arranged arrangement position. Good.

Further, in the above-mentioned embodiment, the approach direction and the exit direction of the vehicle 14 with respect to the parking space 12 are opposite, but the vehicle stop block 18 is not provided,
The present invention can be similarly applied to a parking facility that exits in the same direction as the approach direction and a parking facility that can enter and exit in both directions. In FIG. 1, the feed screw shaft 40
It is also possible to dispose the slide shaft 38, the wheel stopper member 20 and the like on the left side of, and to rotate the wheel stopper member 20 symmetrically by the rotation of one feed screw shaft 40.

Further, although the round rod-shaped slide shaft 38 is provided as a movable supporting member in the above-described embodiment, the movable supporting member is guided in a fixed posture by a guide member such as a guide rail or a guide rod. It may be block-shaped. It is also possible to rotatably attach the wheel stopper member to the movable support member.

Further, in the above embodiment, the drive link member 64 is used.
Were symmetrically arranged as a pair, but the slide shaft 3
8 is prevented from moving in the axial direction, the feed screw shaft 4
There is no problem even if the pair of drive link members are arranged in parallel with each other by setting the thread of 0 to either the right thread or the left thread. Further, if the slide shafts 38 are guided so as to be movable in the advancing and retracting directions by the separately arranged guide means, it is not always necessary to provide a plurality of slide shafts.

Further, in the above-described embodiment, the base end portion of the wheel stopper member 20 is brought close to the upright link member 82 so that the wheel stopper member 20 is closed.
Was set to the upright state. However, for example, by moving the base end portion of the wheel stopper member 20 to the right in FIG. 1, the upright link member 82 is rotated clockwise to be in the lying state. You can also Instead of moving the base end portion of the wheel stopper member 20, it is also possible to move the base end portion of the upright link member 82 to bring the wheel stopper member 20 to the lying state or the upright state.

Further, in the above embodiment, the bracket 84 as a fixed support member is located on the side where the wheel 16 rides when the vehicle exits, that is, on the one end side, and the base end portion of the wheel stopper member 20 is moved along with the movement of the slide shaft 38. Is brought closer to the bracket 84, the roller 7
6 was designed to project upward while moving toward the one end side. For example, as shown in (a) of FIG. 9, the base end portion and the tip end portion of the wheel stopper member 20 in the fallen state are reversed. The wheel stopper member 20 is erected by positioning the base end portion (slide shaft 38) away from the bracket 84 (see FIG. 10B), or as shown in FIG. 84 is positioned farthest from the one end side, and the wheel stopper member 20 is erected by bringing the base end portion (slide shaft 38) of the wheel stopper member 20 closer to the bracket 84 (see FIG. 8B). Even if configured, it is possible to make the roller 76 at the tip end project upward while moving to the one end side. The length dimension of the standing link member 82 and the connecting position by the pin 88 are appropriately determined so that a desired operating state can be obtained.

Further, in the above embodiment, the drive link member 64 is used.
Has a posture substantially parallel to the advancing / retreating direction when the wheel stopper member 20 is in the upright state, but it is not always necessary and may be a posture that intersects the advancing / retreating direction.

Further, in the above embodiment, the standing link member 82 is used.
When the wheel stopper member 20 is upright,
However, in addition to this, for example, an upright link member that is in a posture substantially parallel to the forward / backward direction of the vehicle 14 is provided above the wheel stopper member 20. Alternatively, the wheel stopper member 20 can be configured to stand up and down.

Although not illustrated one by one, the present invention can be implemented in various modified and improved modes based on the knowledge of those skilled in the art.

[Brief description of drawings]

FIG. 1 is a view showing a main part when a wheel stopper member of a parking lock device according to an embodiment of the present invention is in an upright state, and is a sectional view taken along line I-I in FIG.

FIG. 2 is a plan view showing the entire parking lock device of FIG. 1 with a part thereof cut away.

3 is a schematic plan view showing a positional relationship with a vehicle in a parking space in which the parking lock device of FIG. 1 is arranged.

FIG. 4 is a view showing an engagement state between a wheel stopper member and a wheel of the parking lock device of FIG. 1.

5 is a sectional view taken along line VV in FIG.

FIG. 6 is a diagram showing a feed screw shaft, a slide shaft,
It is a top view which expands and shows the mutual positional relationship of a wheel stop member, a drive link member, and a standing link member.

7 is a cross-sectional view showing a main part of the parking lock device of FIG. 1 when a wheel stopper member is in a lying state.

8 is an enlarged plan view showing a mutual positional relationship among a feed screw shaft, a slide shaft, a wheel stopper member, a drive link member, and a standing link member in the state of FIG. 7. FIG.

FIG. 9 is a wheel stopper member, a standing link member, a fixed support member,
It is a schematic diagram explaining other modes with which a movable support member differs,
(A) is a figure which shows a lying state, (b) is a figure which shows a standing state, respectively.

FIG. 10 is a schematic view for explaining still another mode in which the wheel stopper member, the standing link member, the fixed support member, and the movable support member are different from each other, FIG. is there.

[Explanation of symbols]

 10: Parking lock device 12: Parking space 14: Vehicle 16: Wheel 20: Wheel stopper member 21: Case (trapezoidal part) 22: Main body member 30: Motor unit (rotational drive means) 32: Floor member 38: Slide shaft ( Movable support member) 40: Feed screw shaft (feed screw) 60, 62: Nut member 64: Drive link member 76: Roller 82: Standing link member 84: Bracket (fixed support member)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroo Inagawa 345 Kamimachiya, Kamakura City, Kanagawa Mitsubishi Precision Co., Ltd.

Claims (3)

[Claims] 1. A parking lock device for preventing a vehicle that has entered a parking space from leaving the parking space, the main body member being fixed to a floor member of the parking space, and the entry and exit of the vehicle. Is disposed on the main body member so as to be rotatable about a first axis that is substantially perpendicular to the direction and is substantially parallel to the floor member, and is rotated at its tip portion about an axis that is substantially parallel to the first axis. A wheel stopper member to which a roller is attached, and a distal end portion parallel to the second shaft center, which is disposed on the main body member so as to be rotatable around a second shaft center parallel to the first shaft center. Upright link member rotatably connected to the wheel stop member about a central axis, and a base end portion of one of the wheel stop member and the upright link member, which is fixedly provided on the main body member. A fixed support member for rotatably supporting the The body member is movably provided in a straight line direction substantially parallel to the entry and exit directions of the vehicle, and rotatably supports the other base end portions of the wheel stopper member and the standing link member, and the fixed support. By moving the wheel stopper member toward and away from the member, the wheel stopper member is in a collapsed state substantially parallel to the floor member, and the tip end portion of the wheel is such that the roller engages with the wheel when the vehicle exits. A movable supporting member that changes its posture to a standing state that extends obliquely upward toward the side, and is disposed on the main body member substantially parallel to the first axis, and is rotationally driven in both forward and reverse directions by rotational drive means. The feed screw, the nut member screwed to the feed screw, and the movable support member are rotatably connected to each other about the axis substantially perpendicular to the floor member, respectively, so as to rotate the feed screw. As a result, the nut member is reciprocally moved. A parking lock device comprising: a drive link member that reciprocates the movable support member in the straight line direction to move toward and away from the fixed support member. 2. The main body member has a container shape having a substantially trapezoidal vertical cross-section that is substantially parallel to the straight line direction, and has a trapezoidal portion which is fixed on the upper surface of the floor member and can be crossed over a wheel. In the trapezoidal portion, the base end portion of the upright link member is supported by the fixed support member, and the base end portion of the wheel stopper member is supported by the movable support member. With the movement, the tip portion of the wheel stopper member moves upward toward the one end side where the wheel rides when the vehicle exits, and protrudes upward from the trapezoidal portion, so that the wheel stopper member is in the upright state. The parking lock device according to claim 1, wherein 3. In the standing state of the wheel stopper member,
The parking lock device according to claim 1, wherein the drive link member has a posture substantially parallel to the straight line direction, and the standing link member has a posture in a substantially vertical direction.